1138418 has 4 divisors (see below), whose sum is σ = 1707630. Its totient is φ = 569208.

The previous prime is 1138411. The next prime is 1138427. The reversal of 1138418 is 8148311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 786769 + 351649 = 887^2 + 593^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1138411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284603 + ... + 284606.

2^1138418 is an apocalyptic number.

1138418 is a deficient number, since it is larger than the sum of its proper divisors (569212).

1138418 is an equidigital number, since it uses as much as digits as its factorization.

1138418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569211.

The product of its digits is 768, while the sum is 26.

The square root of 1138418 is about 1066.9667286284. The cubic root of 1138418 is about 104.4160478944.

The spelling of 1138418 in words is "one million, one hundred thirty-eight thousand, four hundred eighteen".